Muscular System Flashcards
How many muscle is the body made up of?
650 individual muscles
What are the functions of muscle?
Body movement
maintenance of posture temperature regulation
support
gives the body shape
What are the types of muscle?
Skeletal or voluntary muscles smooth or involuntary muscle cardiac muscles (muscles of the heart)
What are the skeletal muscles?
Muscles that are attached to our bones
gives the body it’s shape directly under our control
What are smooth muscles?
Muscles we have no control over control by central nervous system
What are cardiac muscles?
Specialized muscular tissue is located in the walls of the heart that pumps blood nonstop throughout the body
What are movement produced by the skeletal system?
Flexion tension abduction adduction rotation
What is flexion?
Bending off the bone
What is extension?
The straightening of the two bones
What is abduction?
The movement of a limb away from the midline of the body
What is adduction?
Movement of a limb towards the midline of the body
What is rotation?
A movement around an axis
What are the properties of muscles?
Excitability
Contractibility
Extensibility
Elasticity
What is excitability?
Muscle cells respond to stimuli
What is contractibility?
able to shorten in length
